aluminum air tube for AT44s-10

looking to get the lightweight air tube from JSAR and shedding 1lb off my AT44...I also have the JSAR aluminum air tube on one of my 25 Mrods and the weight difference is amazing(1.5lbs)..JSAR with start producing the air tube when they get ten orders,they are at six orders now.they will be black and look as they do from hatsan...
I am going to wait until it comes before I try and tune it.1lb isn't much but it will make a difference in carrying rifle and holding it on target...